Evidence map›Paper›PMID 20088948›Full record

ArticleCellular microbiology2010

E. coli secreted protein F promotes EPEC invasion of intestinal epithelial cells via an SNX9-dependent mechanism.

Andrew W Weflen, Neal M Alto, Virinchipuram K Viswanathan, Gail Hecht

Open access · bronzeAbstract read
In one paragraph

Article in Cellular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.2field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Safeguarding intestine cells against enteropathogenicProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  3. EnteropathogenicInternational journal of molecular sciences · 2020
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. The Bacterial SpeciesFrontiers in microbiology · 2017
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Andrew W WeflenDepartment of Medicine, Section of Digestive Disease and Nutrition, University of Illinois at Chicago, Chicago, IL 60612, USA.
Neal M Alto
Virinchipuram K Viswanathan
Gail Hecht
University of Arizona · USUniversity of Illinois Chicago · US

Funding

Type III effector regulation of host signal transduction systemsR01AI083359 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI ALTO, NEAL MATHEW · 2009 to 2024
$6.3M
Transcriptional Regulation of NHE-3 Isoform in Human IntestineP01DK067887 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI HECHT, GAIL A · 2006 to 2011
$4.9M
Enteropathogenic E. coli Effects on Intestinal FunctionR01DK050694 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI HECHT, GAIL A · 1997 to 2010
$3.2M
ENTEROHEMORRHAGIC E COLI ALTER INTESTINAL FUNCTIONR01DK058964 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI HECHT, GAIL A · 2000 to 2011
$2.8M
Enteropathogenic E. Coli Effects on Intestinal FunctionR56DK050694 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI HECHT, GAIL A · 2012 to 2012
$335k
NIAID NIH HHS 1R01AI083359-01NIAID NIH HHS R01 AI083359NIDDK NIH HHS DK-50694NIDDK NIH HHS DK-67887NIDDK NIH HHS P01 DK067887NIDDK NIH HHS R01 DK050694NIDDK NIH HHS R01 DK058964NIDDK NIH HHS R56 DK050694
6 · The paper itself

Abstract

Enteropathogenic Escherichia coli (EPEC) infection requires the injection of effector proteins into intestinal epithelial cells (IECs) via type 3 secretion. Type 3-secreted effectors can interfere with IEC signalling pathways via specific protein-protein interactions. For example, E. coli secreted protein F (EspF) binds sorting nexin 9 (SNX9), an endocytic regulator, resulting in tubulation of the plasma membrane. Our aim was to determine the mechanism of EspF/SNX9-induced membrane tubulation. Point mutation of the SNX9 lipid binding domains or truncation of the EspF SNX9 binding domains significantly inhibited tubulation, as did inhibition of clathrin coated pit (CCP) assembly. Although characterized as non-invasive, EPEC are known to invade IECs in vitro and in vivo. Indeed, we found significant invasion of Caco-2 cells by EPEC, which, like tubulation, was blocked by pharmacological inhibition of CCPs. Interestingly, however, inhibition of dynamin activity did not prevent tubulation or EPEC invasion, which is in contrast to Salmonella invasion, which requires dynamin activity. Our data also indicate that EPEC invasion is dependent on EspF and its interaction with SNX9. Together, these findings suggest that EspF promotes EPEC invasion of IECs by harnessing the membrane-deforming activity of SNX9.

Indexed as

Blotting, WesternCaco-2 CellsCarrier ProteinsCell MembraneChlorpromazineEnteropathogenic Escherichia coliEscherichia coli ProteinsHeLa CellsHumansIntracellular Signaling Peptides and ProteinsMicroscopy, Electron, TransmissionMicroscopy, FluorescenceProtein BindingSorting NexinsVesicular Transport ProteinsCarrier ProteinsChlorpromazineEscherichia coli ProteinsEspFU protein, E coliIntracellular Signaling Peptides and ProteinsSNX9 protein, humanSorting NexinsVesicular Transport Proteins

Identifiers

PMID20088948
PMCPMC2896985
OpenAlexW1498113408

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.